Cosmetic detergent composition



S Unified a e M 2,972,582 COSMETIC DETERGENT COMPOSITION Donald H.Powers, Darien, Conn., and Gabriel Barnett,

New York, N 1

No Drawing. Filed Apr. 4, 1955, Ser. No. 499,222-

' 4 Claims. or. 252-152 This invention relates to new and improveddetergent products, particularly liquid cosmetic and toilet detergentproducts.

The detergent composition of the present invention is a synergisticmixture of components wherein the foaming and sudsing power, theemulsifying power and cleansing power of the mixture far exceeds theadditive sudsing, emulsifying and cleansing powers of the individualcomponents'. The composition is opaque, which property is desirable incosmetic products. The detergent is additionally smooth and creamy tothe touch, and what is most important in cosmetic detergents for use onthe hands and face, it leaves them soft, smooth and free fromstickiness.

The composition of the present invention comprises an acyl isethionatewherein the acyl group represents the mixed acid radicals contained incoconut Oil, such as lauroyl, myristoyl and palmitoyl and oleyl, anacylated polypeptide wherein the acyl group is oleyl, myristoyl orlauroyl and the polypeptide is obtainable from the alkaline hydrolysisof leather or other naturally occurring protein materials such asfeathers and proteinaceous tankage, and a higher fatty acid ester of apolyhydric alcohol. The detergent composition additionally comprisessuch a composition having a pH in the range of about pH 5.5 to pH 7. Thecomposition additionally may include germicides and humectants such asglycols or glycerol.

In many compositions containing mixtures of synthetic detergents, it hasbeen found that the detergents inactivate each other to a certainextent. In other words, many such mixtures display sudsing and detergentpowers which are less than or at best equal to the additive powers ofthe individual components. It is surprising therefore that the presentdetergent composition exhibits synergism in its sudsing, foaming,emulsifying and cleansing powers.

The active detergents in the present composition are an acyl isethionatewherein the acyl group represents the fatty acid radicals contained incoconut oil (i.e. principally lau-ryl and myristyl) and an oleylpolypeptide Obtainable by reacting oleyl chloride or other acylatingagent with the alkaline hydrolysis product of leather scrap. Thecomposition additionally includes a conditioning agent compatible withthe detergent mixture comprising a fatty acid ester of a polyhydricalcohol, such as glycerol monostearate, diethylene glycol monopalmitateor ethylene glycol monostearate. The conditioning agent thickens theaqueous solutions of the detergent composition, giving the solutionsgreater viscosity. The conditioning agent additionally leaves the skinsmoother and creamier to the touch. For convenience, the detergent isnormally prepared and used in the form of aqueous solutions.

are mixed with stirring. The resulting mixture is a creamy opaque liquidexhibiting high sudsing properties and excellent emulsifying propertiesfor oleaginous materials. The solution has a pH of about 6. The solutiondoes not irritate the skin of normal, healthy persons after prolongeduse. The pH of about 6 is within the pH range of normal, healthy skin.In use it is applied with warm water and washed into a rich lather.Perfume and color may be added if desired. The product is particularlysuited for the removal of make-up, face powders and cosmeticcompositions.

Example 11 20 parts coco isethionate 25 parts oleyl polypeptide, 35%aqueous solution 4 parts diethylene glycol monostearate 72.2 parts water(All parts by weight) are mixed. The resulting opaque mixture has pH5.7. It exhibits excellent sudsing and cleansing power.

Example III 60 parts lauroyl polypeptide, 35 aqueous solution 1 partpropylene glycol distearate 20 parts coco isethionate 1 part lanolin .25part 2,2-methylene bis (3,4,6-trichlorophenol), 56.75 I

7 parts water (All parts by weight) The above composition exhibitsexcellent detergent and sudsing power.

Example IV 30 parts coco polypeptide, 35% aqueous solution 20 partsoleyl isethionate 7 1 part propylene glycol distearate 2 parts ethyleneglycol monostearate 1 part lanolin 0.5 part 2,2'-methylene bis(3,4,6-trichlorophenol), 65

'parts water (All parts by weight) The above represents an effectivegermicidal cosmetic detergent.

It has been found that aqueous detergent compositions of the type setforth containing about 10-30% by weight of'acyl isethionate, 5-30% byweight of acylated polypeptide and about 1-10% by weight of a higherfatty acid esterof a polyhydric alcohol are effective cosmeticdetergents having greatly increased sudsing and detergent power.

While the invention has been disclosed in terms of certain examples,such examples are to be interpreted as illustrative rather thanlimiting.

We claim; I

1. An aqueous cosmetic detergent composition comprising about 1030% byweight of an acyl isethionate wherein said higher fatty acid ester isethylene glycol monostearate.

3. The detergent composition set forth in claim 1 wherein said acylisethionate is an isethionate of the fatty acids contained in coconutoil.

4. The detergent composition set forth in claim 1 wherein the acyl groupof the polypeptide comprises oleyl and the polypeptide is obtainablefrom the alkaline hydrolysis of leather.

References Cited in the file of this patent UNITED STATES PATENTS2,015,912 Sommer Oct. 1, 1935 2,728,759 Keil Dec. 27, 1955 FOREIGNPATENTS 425,370 Great Britain Mar. 13, 1935 470,494 Great Britain Aug.12, 1937 471,921 Great Britain Sept. 13, 1937 473,760 Great Britain Oct.15, 1937 OTHER REFERENCES Esters by Glyco-Glyco Products Co., N.Y., July1949,

l pages 8-9.

1. AN AQUEOUS COSMETIC DETERGENT COMPOSITION COMPRISING ABOUT 10-30% BYWEIGHT OF AN ACYL ISETHIONATE WHEREIN THE ACYL GROUP REPRESENTS HIGHERFATTY ACID RADICALS CONTAINING 12 TO 18 CARBON ATOMS, ABOUT 5-30% BYWEIGHT OF AN ACYLATED POLYPEPTIDE WHEREIN THE ACYL GROUP IS A HIGHERFATTY ACID RADICAL CONTAINING 12 TO 18 CARBON ATOMS AND THE POLYPEPTIDEIS OBTAINABLE FROM THE ALKALINE HYDROLYSIS OF PROTEINS, AND ABOUT 1-10%BY WEIGHT OF A HIGHER FATTY ACID ESTER OF A POLYHYDRIC ALCOHOL, SAIDCOMPOSITION HAVING A PH IN THE RANGE OF ABOUT PH 5.5 TO ABOUT PH 7.